Question 100140: What is the domain of the function:
f(x) = 2x + 3 when the range is {5,7,9}?
f(x) = 1/4x + 3 when the range is {3, -17, 27}?
f(x) = -3x - 5 when the range is {-2, 0, 3}?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! What is the domain of the function:
f(x) = 2x + 3 when the range is {5,7,9}?
In three separate steps, set f(x) = 5, then 7, then 9
and solve for x:
x =1 , 2, 3
Domain: {1,2,3}
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f(x) = 1/4x + 3 when the range is {3, -17, 27}?
x = 0, -80, 120
Domain: {0,80,120}
f(x) = -3x - 5 when the range is {-2, 0, 3}?
x = -1, -5/3, -8/3
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Cheers,
Stan H.
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